<template>
  <div class="login">
    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form" style="margin-left: 800px;">
      <h1 class="title">潍小智</h1>
      <el-form-item prop="username">
        <el-input
          v-model="loginForm.username"
          type="text"
          size="large"
          auto-complete="off"
          placeholder="账号"
        >
          <template #prefix><svg-icon icon-class="user" class="el-input__icon input-icon" /></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          size="large"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter="handleLogin"
        >
          <template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="code" v-if="captchaEnabled">
        <el-input
          v-model="loginForm.code"
          size="large"
          auto-complete="off"
          placeholder="验证码"
          style="width: 63%"
          @keyup.enter="handleLogin"
        >
          <template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img"/>
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
          :loading="loading"
          size="large"
          type="primary"
          style="width:100%;"
          @click.prevent="handleLogin"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="float: right;" v-if="register">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
      </el-form-item>
    </el-form>
    <!-- 飘窗广告 -->
    <!-- <div id="ad1" style="z-index: 9999;" v-show="showAd">
      <div class="ad-close" @click="closeAd">×</div>
      <a href="https://xq.wfit.edu.cn/" target="_blank">
        <img src="/src/assets/images/gg.png" alt="广告">
      </a>
    </div> -->
    <!--  底部  -->
    <div class="el-login-footer">
      <p>Copyright © 2018-2025 ruoyi.vip All Rights Reserved.</p>
      <p><a href="https://beian.miit.gov.cn/#/Integrated/index">
        鲁ICP备2025161917号
      </a></p>
    </div>
  </div>
</template>

<script setup>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";
import useUserStore from '@/store/modules/user'
import { onMounted, onUnmounted, ref } from 'vue'

const userStore = useUserStore()
const route = useRoute();
const router = useRouter();
const { proxy } = getCurrentInstance();

const loginForm = ref({
  username: "",
  password: "",
  rememberMe: false,
  code: "",
  uuid: ""
});

const loginRules = {
  username: [{ required: true, trigger: "blur", message: "请输入您的账号" }],
  password: [{ required: true, trigger: "blur", message: "请输入您的密码" }],
  code: [{ required: true, trigger: "change", message: "请输入验证码" }]
};

const codeUrl = ref("");
const loading = ref(false);
// 验证码开关
const captchaEnabled = ref(true);
// 注册开关
const register = ref(false);
const redirect = ref(undefined);

// 广告显示控制
const showAd = ref(true);

// 广告配置对象
const AdMoveConfig = {
  IsInitialized: false,
  ScrollX: 0,
  ScrollY: 0,
  MoveWidth: 0,
  MoveHeight: 0,
  Resize() {
    const winsize = GetPageSize();
    this.MoveWidth = winsize[2];
    this.MoveHeight = winsize[3];
    this.Scroll();
  },
  Scroll() {
    const winscroll = getPageScroll();
    this.ScrollX = winscroll[0];
    this.ScrollY = winscroll[1];
  }
};

// 添加事件处理函数
function addEvent(obj, evtType, func, cap) {
  cap = cap || false;
  if (obj.addEventListener) {
    obj.addEventListener(evtType, func, cap);
    return true;
  } else if (obj.attachEvent) {
    if (cap) {
      obj.setCapture();
      return true;
    } else {
      return obj.attachEvent("on" + evtType, func);
    }
  }
  return false;
}

// 获取页面滚动位置
function getPageScroll() {
  let xScroll, yScroll;
  if (self.pageXOffset) {
    xScroll = self.pageXOffset;
    yScroll = self.pageYOffset;
  } else if (document.documentElement && document.documentElement.scrollLeft) {
    xScroll = document.documentElement.scrollLeft;
    yScroll = document.documentElement.scrollTop;
  } else if (document.body) {
    xScroll = document.body.scrollLeft;
    yScroll = document.body.scrollTop;
  }
  return [xScroll || 0, yScroll || 0];
}

// 获取页面尺寸
function GetPageSize() {
  let xScroll, yScroll;
  if (window.innerHeight && window.scrollMaxY) {
    xScroll = document.body.scrollWidth;
    yScroll = window.innerHeight + window.scrollMaxY;
  } else if (document.body.scrollHeight > document.body.offsetHeight) {
    xScroll = document.body.scrollWidth;
    yScroll = document.body.scrollHeight;
  } else {
    xScroll = document.body.offsetWidth;
    yScroll = document.body.offsetHeight;
  }

  let windowWidth, windowHeight;
  if (self.innerHeight) {
    windowWidth = self.innerWidth;
    windowHeight = self.innerHeight;
  } else if (document.documentElement && document.documentElement.clientHeight) {
    windowWidth = document.documentElement.clientWidth;
    windowHeight = document.documentElement.clientHeight;
  } else if (document.body) {
    windowWidth = document.body.clientWidth;
    windowHeight = document.body.clientHeight;
  }

  const pageWidth = xScroll < windowWidth ? windowWidth : xScroll;
  const pageHeight = yScroll < windowHeight ? windowHeight : yScroll;

  return [pageWidth, pageHeight, windowWidth, windowHeight];
}

// 广告移动类
function AdMove(id) {
  if (!AdMoveConfig.IsInitialized) {
    AdMoveConfig.Resize();
    AdMoveConfig.IsInitialized = true;
  }

  const obj = document.getElementById(id);
  if (!obj) return;
  
  obj.style.position = "absolute";
  let W = AdMoveConfig.MoveWidth - obj.offsetWidth;
  let H = AdMoveConfig.MoveHeight - obj.offsetHeight;
  let x = W * Math.random();
  let y = H * Math.random();
  let rad = (Math.random() + 1) * Math.PI / 6;
  let kx = Math.sin(rad);
  let ky = Math.cos(rad);
  let dirx = Math.random() < 0.5 ? 1 : -1;
  let diry = Math.random() < 0.5 ? 1 : -1;
  const step = 1;
  let interval;

  function CustomMethod() {
    obj.style.left = (x + AdMoveConfig.ScrollX) + "px";
    obj.style.top = (y + AdMoveConfig.ScrollY) + "px";
    rad = (Math.random() + 1) * Math.PI / 6;
    W = AdMoveConfig.MoveWidth - obj.offsetWidth;
    H = AdMoveConfig.MoveHeight - obj.offsetHeight;
    x = x + step * kx * dirx;
    if (x < 0) {
      dirx = 1;
      x = 0;
      kx = Math.sin(rad);
      ky = Math.cos(rad);
    }
    if (x > W) {
      dirx = -1;
      x = W;
      kx = Math.sin(rad);
      ky = Math.cos(rad);
    }
    y = y + step * ky * diry;
    if (y < 0) {
      diry = 1;
      y = 0;
      kx = Math.sin(rad);
      ky = Math.cos(rad);
    }
    if (y > H) {
      diry = -1;
      y = H;
      kx = Math.sin(rad);
      ky = Math.cos(rad);
    }
  }

  function Run() {
    const delay = 10;
    interval = setInterval(CustomMethod, delay);
    obj.onmouseover = function() {
      clearInterval(interval);
    };
    obj.onmouseout = function() {
      interval = setInterval(CustomMethod, delay);
    };
  }

  // 清理函数
  function Clear() {
    if (interval) {
      clearInterval(interval);
    }
  }

  return { Run, Clear };
}

// 关闭广告
// const closeAd = () => {
//   showAd.value = false;
// };

let adInstance = null;

onMounted(() => {
  // 添加窗口事件监听
  addEvent(window, "resize", () => AdMoveConfig.Resize());
  addEvent(window, "scroll", () => AdMoveConfig.Scroll());
  
  // 初始化广告
  setTimeout(() => {
    adInstance = AdMove("ad1");
    if (adInstance) {
      adInstance.Run();
    }
  }, 100);
});

onUnmounted(() => {
  // 清理广告实例
  if (adInstance) {
    adInstance.Clear();
  }
});

watch(route, (newRoute) => {
    redirect.value = newRoute.query && newRoute.query.redirect;
}, { immediate: true });

function handleLogin() {
  proxy.$refs.loginRef.validate(valid => {
    if (valid) {
      loading.value = true;
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {
        Cookies.set("username", loginForm.value.username, { expires: 30 });
        Cookies.set("password", encrypt(loginForm.value.password), { expires: 30 });
        Cookies.set("rememberMe", loginForm.value.rememberMe, { expires: 30 });
      } else {
        // 否则移除
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove("rememberMe");
      }
      // 调用action的登录方法
      userStore.login(loginForm.value).then(() => {
        const query = route.query;
        const otherQueryParams = Object.keys(query).reduce((acc, cur) => {
          if (cur !== "redirect") {
            acc[cur] = query[cur];
          }
          return acc;
        }, {});
        router.push({ path: redirect.value || "/", query: otherQueryParams });
      }).catch(() => {
        loading.value = false;
        // 重新获取验证码
        if (captchaEnabled.value) {
          getCode();
        }
      });
    }
  });
}

function getCode() {
  getCodeImg().then(res => {
    captchaEnabled.value = res.captchaEnabled === undefined ? true : res.captchaEnabled;
    if (captchaEnabled.value) {
      codeUrl.value = "data:image/gif;base64," + res.img;
      loginForm.value.uuid = res.uuid;
    }
  });
}

function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password: password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
  };
}

getCode();
getCookie();
</script>

<style lang='scss' scoped>
.login {
  display: flex;
  //中间偏右
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/login-background.jpg");
  background-size: cover;
}
.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff3f;
  width: 400px;
  padding: 25px 25px 5px 25px;
  .el-input {
    height: 40px;
    input {
      height: 40px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 40px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 80px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 40px;
  padding-left: 12px;
}

#ad1 {
  position: absolute;
  cursor: pointer;
  
  img {
    width: 150px;
    height: auto;
    border: 0;
    display: block;
  }
  
  .ad-close {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    border-radius: 50%;
    cursor: pointer;
    font-size: 16px;
    
    &:hover {
      background: rgba(0, 0, 0, 0.8);
    }
  }
}
</style>
